Other PB Staff?

They are not part of the Wissmiller family (which is what the show is REALLY about) and they are not actual employees of PBR. Two of the people you see in the background are pre-need agents and work out of PBR. In fact, Melissa isn't really an employee of PBR either. She was simply brought in to add to the family mix (not to mention she was dating Rick which added to the show's spice). Other people you may see in the background range from product supply reps to body transportation staff etc.